High-pressure slide valve



March 26, 1929. s Q L 1,707,125

HIGH PRESSURE SLIDE VALVE Filed 192s Ila lll

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Patented Mar. 26, 1929;

UNITED STATES PATENT orrlcs.

STEPHAN LalFLER, OF GHARLOTTENBUBG, NEAR BERLIN, GERMANY.

HIGH-PRESSURE SLiDE VALVE.

Application filed August 5, 1926, Serial No. 127,425, andvin Germany August 19, '1925.

This invention rovides an improved high pressure sto va ve, speciall suitable for shutting oil igh pressure an highly superheated steam, in'which a single closing memher is brought into the close position, opposite to the direction of flow, by imparting thereto a combined vertical and lateral movement through the agency of guide members attached to the control spindle and operating like a toggle joint.

An essential feature of the invention is the manner of transmitting power from the uide members to the closing member throng l the agency ot a centrally disposed movable intermediate member which transmits the laterally o crating forces of the guide members to the c using member in a perfectly centric maer,

irregularities, such as changes of shape in the guide members through the edects of temperature or wear, are rendered innocuous as regards a tight closure of the valve by the circumstance that the closing member is uided centrally in the admission orifice ot fire casing, shortly before closing and until completely closed, independently at the intermediate member.

Art the same time, in closing and opening the valve, the toggle-link torces aretrans mitted directly to guide ledges situated in the valve casing,

the invention .is illustrated diagrammaticallyand by way of example on the accompanymg drawing in which Figure l is a vertical section throughone constructional torm all the improved high-pressure stop-valve,

and Figure? a horizontal section through a modification: V

helerring to Fig. 1, 1 denotes the valve casing, 2" the closing member which makes a tight joint at 3, by means ot-a sharp or ta er edge, a ainstthe direction ot how, an is centere at l in the admission orifice of the valve casing. Said closing memberli's articulated to-a guide block 6 bya'n articulation intended-torender this centering otthe memher in the How orifice offth'e casin independent ot-tlie position of the guidev lock. The

' latter'terminates in a tube 7, which afiords till unrestricted passage to the flow of steam through the casing when the valve is open.

Under the tube 7 are rollers 8, which take up the vertical forces of two pairs of toggle links 9: 9 by means of which power 1s transmitted from the controlspindle .10 to the guide block 6. The drawing shows an upright spindle actuated by a nut 11 and hand wheel 12. The action of the toggle links can be limited by a counter nut 11. In the horizontal section shown in Fig. 2, the'rei'erencc numerals denote the same parts as in Fig. 1. In addition, 13 are guide rollers with cylindrical or other conveniently shaped rolling surfaces by means of which the toggle linlrs pressure act, directly on the valve casing, against the ledge 14 as regards the closing forces, and against the ledge L) as regards the opening forces. 16 is a hemispherical member fittin in the valve body and terminatin in a ho t, the headpiece l7 connecting it wit the guide block 6. 18 is the supplementary hemispherical member seated in a bearing cup 19, Said member in conjunction with the member 16, enables the valve body to turn in all directions. The bearing cup 19 wherein the ball member 18 is mounted, en-

merrdier is connected with the ball member lti by means of a plate 20 and screws Ql.

i aving now particularly described and ascertained the nature of my said invention and in what manner the same is to be per termed, I declare that what l claim is t 1. A high-pressure stop valve comprising in combination a valve casing having an inlet and outlet port, a valve for closing said inlet port, a vertically movable control spindle, a guide block, a toggle-joint connection between said guide block and said spindle, and a rotatable connection between said valve and said guide block whereby said valve may be vertically withdrawn from said inlet opening or forced laterally into said inlet opening for closing same.

2. A high-pressure stop valve comprising a casing having an inlet and outlet opening therein, a valve closing for the inlet opening thereof, a vertically movable control spindle, a guide block, a toggle-joint connection between said guide block and said spindlgand an intermediate member for connecting said valve to said guide block whereby said valve is capable of being shifted laterally, at right angles to the direction of travel of said control spindle and rotated with relation to said guide block.

3. A high-pressure stop valve comprising in combination a casing having an inlet and outlet opening therein, a valve for closing said inlet opening, a, vertically movable control spindle, a guide block, a toggle-j oint conwith said guide block.

nection between said guide block and said spindle, means for connecting said valves to said guide block, whereby said valve will be guided centrally in relation to the inlet opening of said valve casing prior to and while the valve is seated within said inlet opening of the casing, and said valve being capable ot being withdrawn vertically from -the inlet opening of said casing when the said valve is in its open position.

4. A high-pressure stop valve comprising in combination having an inlet and outlet -5. A high-pressure stop valve comprising in combination a casing having an inlet and outlet opening formed the-rein, a valve for closing the inlet opening of said casing, a

vertically movable control spindle. a guide block, a toggle jointconnectien between said guide block and said spindle, a tube formed with said guide block, means for connecting said valve with said guide block, and said tubes being adapted to engage the valve casing for limiting the downward movement of said guide block whereby when pressure is applied to said control spindle said valve will be caused to move laterally-into the seated position within said inlet opening.

6. A high-pressure stop'valve comprising in combination a casing having an inlet and outlet opening therein. a control spindle, a guide block, toggle links connecting said guide block wtih said spindle, a tube formed with said guide block and adapted to establish a communication between said inlet and outlet openings, rollers mounted upon said tube, means for rotatably connecting said valve with said guide block, guide rollers carried by said toggle links and said casing having ledges formed therein in which may travel said guide rollers substantially as and for the purpose specified.

In witness whereof I have hereunto set my hand.

STEPHAN LGFFLER. 

